Display device

ABSTRACT

A display device according to an aspect of the present invention includes: a display body including a curved part; a case including a bottom plate part through which a through hole is provided at a position opposed to the curved part; and a printed circuit board that is fixed to a surface of the bottom plate opposite to the display body side with the electronic component is mounted on a surface opposed to the bottom plate and with the electronic component arranged inside the through hole.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority from Japanese Application No.2015-238380, filed on Dec. 7, 2015, the contents of which areincorporated by reference herein in its entirety.

BACKGROUND

1. Technical Field

The present invention relates to a display device.

2. Description of the Related Art

There is known a display device formed by curving a display body (forexample, refer to Japanese Patent Application Laid-open Publication No.11-38395). Such a kind of display device is called a curved screendisplay. A printed circuit board is electrically coupled to the displaybody. The printed circuit board is drawn to the outside of a case thathouses the display body, and fixed to a bottom plate part of the case.

The thickness of the display device is determined by the depth of thecase, the thickness of the printed circuit board, and the height of anelectronic component mounted on the printed circuit board. In thedisplay device described above, the display body is put into a curvedstate when being housed in the case. Thus, the depth of the case and thethickness of the display device are increased.

SUMMARY

A display device according to an aspect of the present inventionincludes: a display body including a curved part; a case including abottom plate part through which a through hole is provided at a positionopposed to the curved part; and a printed circuit board that is fixed toa surface of the bottom plate part opposite to the display body sidewith an electronic component mounted on a surface of the printed circuitboard opposed to the bottom plate part and with the electronic componentarranged inside the through hole.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view of a display device according to an embodimentviewed from an upper surface side thereof;

FIG. 2 is a sectional view along the line A-A′ in FIG. 1;

FIG. 3 is a diagram illustrating a state before a printed circuit boardis fixed to a lower surface of a case;

FIG. 4 is a diagram illustrating a state after the printed circuit boardis fixed to the lower surface of the case;

FIG. 5 is a diagram illustrating a variation of a curved shape of adisplay body; and

FIG. 6 is a diagram illustrating a variation of the curved shape of thedisplay body.

DETAILED DESCRIPTION

The following describes a mode for carrying out the invention(embodiment) in detail with reference to the drawings. The presentinvention is not limited to the embodiment described below. Componentsdescribed below include a component that is easily conceivable by thoseskilled in the art and components that are substantially the same. Thecomponents described below can be appropriately combined. The disclosureis merely an example, and the present invention naturally encompasses anappropriate modification maintaining the gist of the invention that iseasily conceivable by those skilled in the art. To further clarify thedescription, the width, the thickness, the shape, and the like of eachcomponent may be schematically illustrated in the drawings as comparedwith an actual aspect. However, the drawings merely provide examples,and are not intended to limit interpretation of the invention. The sameelement as that described in the drawing already discussed is denoted bythe same reference numeral throughout the description and the drawings,and detailed description thereof will not be repeated in some cases.

FIG. 1 is a plan view of a display device 100 according to an embodimentviewed from an upper surface side thereof. FIG. 2 is a sectional viewalong the line A-A′ in FIG. 1. FIGS. 3 and 4 are diagrams illustrating aconfiguration on a lower surface side of a case 2. FIG. 3 is a diagramillustrating a state before a printed circuit board 60 is fixed to thelower surface of the case 2. FIG. 4 is a diagram illustrating a stateafter the printed circuit board 60 is fixed to the lower surface of thecase 2. The following describes a configuration of each member assumingthat a side from which an image is observed by a user is an “upperside”, and a side opposite to the side from which the image is observedby the user is a “lower side”.

As illustrated in FIGS. 1 and 2, the display device 100 includes adisplay body 1, the case 2, a covering member 10, a support base 33, anda reinforcing frame 50. The display body 1 includes, for example, adisplay panel 20 and a backlight 30. The display panel 20 is, forexample, a liquid crystal panel. The printed circuit board 60 iselectrically coupled to the display panel 20 through a flexible printedcircuit board (hereinafter, abbreviated as an FPC) 26. The backlight 30includes, for example, a light guide plate 31, an optical sheet part 32,and a light source (not illustrated). The optical sheet part 32includes, for example, a plurality of optical sheets such as a prismsheet and a diffusion sheet.

The covering member 10 is bonded to an upper surface of the displaypanel 20. The covering member 10 is, for example, a transparentsubstrate that transmits visible light such as a glass substrate or aplastic substrate. The covering member 10 includes a frame-shaped lightshielding layer 11 that edges a display region 1A of the display body 1.An image displayed in the display region 1A is visually recognized by anobserver through the covering member 10. An outer edge of the coveringmember 10 is supported by the reinforcing frame 50. When the displaydevice 100 is mounted on a plate of another device, the reinforcingframe 50 is sandwiched between the plate and the covering member 10 tosuppress vibration of the covering member 10.

A curved part that is curved toward the case 2 side is arranged at acenter part of the covering member 10. The display body 1 is bonded to alower surface of the covering member 10 while being curved along thecurved part. The display body 1 includes a curved part CV reflecting thecurved shape of the covering member 10. The covering member 10 protectsthe display panel 20 and keeps the display panel 20 in the curved shape.A member constituting the display panel 20 is thinned to easily followthe curved shape of the covering member 10. For example, the thicknessof a substrate constituting the display panel 20 is 50 μm to 200 μm.

The case 2 includes a first frame 36, a second frame 37, a third frame40, and the support base 33. The first frame 36 includes a first framebody 36 b and a bottom plate part 36 a. The bottom plate part 36 a isarranged so as to be opposed to a lower surface of the display body 1.The first frame body 36 b projects toward the display body 1 from anouter edge of the bottom plate part 36 a.

The support base 33 supporting the display body 1 is arranged betweenthe first frame 36 and the display body 1. The support base 33 includesa main body 34 and a side surface cover 35. The main body 34 issandwiched between the display body 1 and the bottom plate part 36 a,and supports the lower surface of the display body 1. The side surfacecover 35 projects toward the covering member 10 side from an outer edgeof an upper surface of the main body 34 to surround an outercircumference of the backlight 30. The backlight 30 is fitted into thesupport base 33 along an inner wall surface of the side surface cover35.

An indentation 34S having a depth almost the same as the thickness ofthe first frame body 36 b is provided in a side surface of the main body34 opposed to the first frame body 36 b. A lower end of a part of thesupport base 33 in which the indentation 34S is provided is fitted intothe first frame 36 along an inner wall surface of the first frame body36 b. An upper end of the support base 33 having the side surface cover35 provided thereon is arranged in such a manner as to run on an upperpart of the first frame body 36 b.

The second frame 37 includes a second frame body 37 a, an edge cover 37b, and a projection part 37 c. The second frame body 37 a surrounds anouter circumference of the first frame body 36 b, and is fixed to a sidesurface of the first frame body 36 b. The edge cover 37 b projectstoward the display body 1 side from an upper end of the second framebody 37 a so as to be opposed to an edge of an upper surface of thebacklight 30. The projection part 37 c projects toward the backlight 30side from a lower surface of the edge cover 37 b to be in contact withan upper surface of the light guide plate 31. An outer edge of thedisplay panel 20 is in contact with an upper surface of the edge cover37 b. An outer edge of the optical sheet part 32 and an upper end of theside surface cover 35 are in contact with a lower surface of the edgecover 37 b.

The first frame 36 is fitted into the second frame 37 along an innerwall surface of the second frame body 37 a. The first frame 36 is fixedto the second frame 37 with a screw (not illustrated), for example. Acenter part of the backlight 30 is exposed from the edge cover 37 b. Thedisplay panel 20 is irradiated with light emitted from the center partof the backlight 30. The display panel 20 modulates the light emittedfrom the backlight 30 to form an image.

The third frame 40 is bonded to the covering member 10 while surroundingan outer circumference of the second frame body 37 a. A gap 43 isprovided between the third frame 40 and the second frame body 37 a. Afirst end of the FPC 26 is electrically coupled to the display panel 20.A second end of the FPC 26 is drawn out to a lower surface side of thebottom plate part 36 a through the gap 43. The printed circuit board 60is electrically coupled to the second end of the FPC 26. The printedcircuit board 60 is fixed to the lower surface of the bottom plate part36 a with a screw and the like.

As illustrated in FIG. 3, a through hole 36H is provided through thebottom plate part 36 a at a position opposed to the curved part CV. Asillustrated in FIG. 2, the printed circuit board 60 includes a substratebody 61 and an electronic component 62. The electronic component 62 ismounted on a surface of the printed circuit board 60 opposed to thebottom plate part 36 a. As illustrated in FIGS. 2 and 4, the printedcircuit board 60 is fixed to a surface of the bottom plate part 36 aopposite to the display body 1 side with the electronic component 62arranged inside the through hole 36H. The electronic component 62 is,for example, arranged in a space SP formed between the bottom plate part36 a and the display body 1 through the through hole 36H.

The space SP is, for example, formed by an indentation 34D provided in asurface of the support base 33 opposed to the bottom plate part 36 a.The space SP formed between the surface in which the indentation 34D isprovided and the bottom plate part 36 a is the space for housing theelectronic component 62.

For example, as illustrated in FIG. 3, the main body 34 includes a topboard 34 a supporting the display body 1 and a plurality of wall members34 b projecting from the top board 34 a toward the bottom plate part 36a side. A space surrounded by the top board 34 a and the wall members 34b is the space SP for housing the electronic component 62. The wallmembers 34 b are, for example, arranged in a grid-like fashion on theentire surface of the top board 34 a on the bottom plate part 36 a side,but the arrangement of the wall members 34 b is not limited thereto. Forexample, the wall members 34 b may be arranged in stripes on the entiresurface of the top board 34 a on the bottom plate part 36 a side. Theside surface cover 35 illustrated in FIG. 2 is arranged on an outer edgeof an upper surface of the top board 34 a.

As illustrated in FIGS. 3 and 4, an end of an FPC 25 that iselectrically coupled to the backlight 30 is drawn out to a lower surfaceside of the bottom plate part 36 a. An FPC 27 is electrically coupled tothe printed circuit board 60. The end of the FPC 25 and an end of theFPC 27 are each fixed to the lower surface of the bottom plate part 36 awith adhesive tape or the like. The display device 100 is shipped withthe FPC 25 and the FPC 27 fixed to the lower surface of the bottom platepart 36 a with adhesive tape.

In the display device 100 according to the present embodiment describedabove, the through hole 36H for housing the electronic component 62 isarranged on the bottom plate part 36 a of the case 2. Thus, the heightof the electronic component 62 projecting toward the lower surface sideof the bottom plate part 36 a is reduced, which reduces the thickness ofthe display device 100. When the display body 1 including the curvedpart CV is housed in the case 2, a gap is formed between the displaybody 1 and the bottom plate part 36 a of the case 2. Accordingly, whenthe electronic component 62 is housed in the gap, the height of theelectronic component 62 projecting toward the lower surface side of thebottom plate part 36 a is considerably reduced.

The preferred embodiment of the present invention has been describedabove. However, the present invention is not limited thereto. Contentdisclosed in the embodiment is merely an example, and variousmodifications can be made without departing from the gist of theinvention. The present invention naturally encompasses an appropriatemodification maintaining the gist of the invention. The presentinvention also encompasses any invention that can be implemented bythose skilled in the art by appropriately modifying design of theinvention described above while maintaining the gist of the invention.

For example, the above embodiment exemplifies a case in which thedisplay body 1 is curved toward the bottom plate part 36 a side, but theshape of the display body 1 is not limited thereto. FIGS. 5 and 6 arediagrams illustrating variations of the curved shape of the displaybody. In the example of FIG. 5, similarly to the display body 1illustrated in FIG. 2, a display body 3 is curved toward the bottomplate part 36 a side. In the example of FIG. 6, a display body 4 iscurved toward a side opposite to the bottom plate part 36 a side. Thethrough hole of the bottom plate part 36 a is formed at an appropriateposition corresponding to the curved shape of the display body 1.

For example, the through hole of the bottom plate part 36 a ispreferably arranged at a position different from a position at which adistance between the display body and the bottom plate part 36 a is thesmallest. When the through hole is formed at such a position, the spaceSP having a sufficient height for inserting the electronic component 62(refer to FIG. 2) is secured above the through hole. For example, in theexample of FIG. 5, the through hole is formed in a region SP2 opposed toan outer edge of the display body 3. In the example of FIG. 6, thethrough hole is formed in a region SP1 opposed to a center part of thedisplay body 1. Accordingly, a thin display device is provided in whichthe space SP between the display body and the bottom plate part 36 a iseffectively utilized.

The above embodiment exemplifies a liquid crystal display deviceincluding the liquid crystal panel and the backlight as the display body1, but the display body 1 is not limited thereto. For example, anorganic electro-luminescence display (OLED) device or an electrophoreticdisplay (EPD) device may be used as the display body 1.

What is claimed is:
 1. A display device comprising: a display bodyincluding a curved part; a case including a bottom plate part throughwhich a through hole is provided at a position opposed to the curvedpart; and a printed circuit board that is fixed to a surface of thebottom plate part opposite to the display body side with an electroniccomponent mounted on a surface of the printed circuit board opposed tothe bottom plate part and with the electronic component arranged insidethe through hole.
 2. The display device according to claim 1, whereinthe through hole is arranged at a position different from a position atwhich a distance between the display body and the bottom plate part isthe smallest.
 3. The display device according to claim 1, wherein theelectronic component is arranged in a space formed between the bottomplate part and the display body through the through hole.
 4. The displaydevice according to claim 3, wherein a support base supporting thedisplay body is arranged between the bottom plate part and the displaybody, an indentation is provided in a surface of the support baseopposed to the bottom plate, and a space formed between the surface inwhich the indentation is provided and the bottom plate part is the spacefor housing the electronic component.
 5. The display device according toclaim 4, wherein the support base includes a top board supporting thedisplay body and a plurality of wall members projecting from the topboard toward the bottom plate part side, and a space surrounded by thetop board and the wall members is the space for housing the electroniccomponent.